Offering extra strength for your heavy or fragile items, these 406x406x406mm double wall cardboard boxes provide reliable protection against damage and squashing. With the quick assembly and using packing tape to secure the top and base, building these durable and robust double wall cardboard boxes is easy. Features include: Eco-friendly – fully degradable and recyclable Made from high quality 75% recycled paper Heavy duty, with a 25kg load capacity Straightforward to assemble Supplied flat packed